| `contact` | `dict` | La información de contacto para la API expuesta. Puede contener varios campos. <details><summary><code>contact</code> fields</summary><table><thead><tr><th>Parámetro</th><th>Tipo</th><th>Descripción</th></tr></thead><tbody><tr><td><code>name</code></td><td><code>str</code></td><td>El nombre identificativo de la persona/organización de contacto.</td></tr><tr><td><code>u...

from fastapi import Depends, FastAPI, HTTPException

app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: str = Depends(get_username)):
    if item_id == "portal-gun":
        raise InternalError(

		<fieldset class="mb-3">
			<legend><la:message key="labels.index_label" /></legend>
			<label for="labelTypeSearchOption"><la:message
					key="labels.index_label" /></label>
			<la:select property="fields.label" styleId="labelTypeSearchOption"
				multiple="true" styleClass="form-control">
				<c:forEach var="item" items="${labelTypeItems}">
					<la:option value="${f:u(item.value)}">${f:h(item.label)}</la:option>
				</c:forEach>

                                    </la:info>
                                    <la:errors/>
                                </div>
                                    <%-- Form Fields --%>
                                <table class="table table-bordered" aria-label="<la:message key="labels.duplicate_host_details" />">
                                    <tbody>
                                    <tr>

		<fieldset class="mb-3">
			<legend><la:message key="labels.index_label" /></legend>
			<label for="labelTypeSearchOption"><la:message
					key="labels.index_label" /></label>
			<la:select property="fields.label" styleId="labelTypeSearchOption"
				multiple="true" styleClass="form-control">
				<c:forEach var="item" items="${labelTypeItems}">
					<la:option value="${f:u(item.value)}">${f:h(item.label)}</la:option>
				</c:forEach>

Você pode verificar na UI de documentação em `/docs`:

<div class="screenshot">
<img src="/img/tutorial/request-form-models/image01.png">
</div>

## Proibir Campos Extras de Formulários { #forbid-extra-form-fields }

Em alguns casos de uso especiais (provavelmente não muito comum), você pode desejar **restringir** os campos do formulário para aceitar apenas os declarados no modelo Pydantic. E **proibir** qualquer campo **extra**.

        }

        @Test
        @DisplayName("Should not modify reserved field bytes")
        void testReservedFieldNotModified() {
            lock = new Smb2Lock(999L, 888L, 0xFF);

            // Fill buffer with non-zero values
            Arrays.fill(buffer, (byte) 0xFF);

            lock.encode(buffer, 0);

            // Reserved field bytes are not modified by the encode method

            throw new IllegalArgumentException("Signature field exceeds data buffer size");
        }

        // Use fine-grained locking for better concurrency
        this.signingLock.lock();
        try {
            if (this.closed) {
                throw new IllegalStateException("SigningDigest is closed");
            }

            // zero out signature field
            final int index = offset + SIGNATURE_OFFSET;

        return isAnnotatedWithIncubating(method) || isAnnotatedWithIncubating(method.jApiClass) || isOverride(method)
    }

    private static boolean isIncubatingField(JApiField field) {
        return isAnnotatedWithIncubating(field) || isAnnotatedWithIncubating(field.jApiClass)
    }

    private static boolean isIncubatingConstructor(JApiConstructor constructor) {

///

## Подсказки типов с аннотациями метаданных { #type-hints-with-metadata-annotations }